冷却塔高卸荷槽复式切口爆破控制振动机理研究  

Vibration control mechanism of composite cut blasting technology of high load relieving groove of a cooling tower

作　　者：褚怀保[1] 侯爱军[2] 徐鹏飞[1] 张英才[1] 梁为民[1] 

机构地区：[1]河南理工大学土木工程学院,河南焦作454000 [2]洛阳理工学院土木工程系,河南洛阳471023

出　　处：《振动与冲击》2014年第9期195-199,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金项目(50874039);河南理工大学博士基金

摘　　要：以能量理论、数值计算结果和现场振动测试结果为基础结合大量工程实践对冷却塔高卸荷槽复式切口爆破技术的控制振动机理进行了综合分析。高卸荷槽复式切口能有效调控塔体应力状态,增大塔体倒塌过程中的解体程度和速度,降低塔体塌落触地动能,同时增大塔体触地冲击过程中促使冲击结构进一步解体的能量,并降低碰撞后转化为波动的能量,而且能改变塔体倒塌触地冲击形式和冲击过程,分散塔体触地冲击能量,延长塔体倒塌触地冲击时间,减小塔体触地冲击强度。Here,the mechanism of vibration control for composite cut blasting technology of high load relieving groove of a cooling tower was analyzed comprehensively based on the energy theory,numerical results,the measured vibration results and engineering practice.The study results showed that firstly,this technology can adjust and control the tower body＆#39;s stress state,increase the disintegration failure level and speed in the tower collapse process,then reduce the tower kinetic energy when it touches the ground;secondly,it can increase the disintegration failure energy of a shocked structure,and reduce the vibration wave energy;further more,it can change the impact forms and the impact process of a tower body,disperse the ground shock energy,extend the impact time of tower body touching the ground,and decrease the impact strength of tower body.

关 键 词：冷却塔 控制爆破 高卸荷槽复式切口 控制振动机理 

分 类 号：TU746[建筑科学—建筑技术科学]